Safety-stop for elevator-motors.



A. SORLIEN. SAFE'W SEO? FOR ELEVATOR MOTORS. areucmou mm JUNE 2. m1.

Patented Dec. 11,1917.

2 SHEETS-SHEET 1- mantel NDREW 50mm v A. sonum.

SAFETY STOP FOR ELEVATOR MOTORS.

APPLICM'lON FILED JUNE 2. I917- mammal m 11,1917.

, 2S'HEETS-4SHEET 2.

avwamkoz Y HNDREW 503mm! happening of a predeterminedcontingency,

'rart a ANDREW SQRLIEN, or AUSTIN, MINNESOTA.

' sarELrY-s'rorron EnEvaToR-Morons.

a specification, reference being to the 'accompany1ng drawings.

This invention relates to safety appliances for stopping motors or engines upon the and particularly to means forfstopping the movement of elevators carrying coal, or otherlike material; if the chuteinto which the elevating buckets 1 discharges becomes clogged or overfilled.

In elevators where coal or like material is I I the direct on of the arrows.

carried upwardtoan upper level by means "chute, itis acommon'thing for the chute" "to become filledupfor clogged, whereupon of elevators andthere' discharged into a the ocal discharged, from the elevator bucketsfis liable to fall downward through ithe'open structurewithin which the elevator ism'ounted and serious accidents have \bythe starting box or controller ofany occurred in this manner, particularly in is filled" being very liable *tobe discharged 1 k i Dlsposed within the basement lea-sprocket those elevators where anoperator stands beside the scales below the chute, the, coal carried over by the buckets after the chute u'pon the operators head.

The general object of myfinvention is to pro'vide 'a safety device applicable to elevators of this character in which the motor operating the elevators will be stopped as "soon as the dischargingchute becomes filled which: a switch isprovided for disconnecting the motor from thesource of energy and in"'which"means are provided to cause the opening of the switch when the di'scharg p Y sprocketwheels'17 again; "The sprocket ing chute becomes clogged. 1

And a further object is to provide a trap board or platform upon which coal'or other material is discharged, if the hopper or discharging chute becomes filled, this trap board being "operatively connected to a switch actuating means to shift the switch if any coal or othermatter-drops"upon the platform l l specification of LettersPatentt atent 1mm 11 mm,

applicaticnfilcdlfunez,1917. entertain ng;

-O th er objects will appear in the course of the-jfcllowing description. n Myilnventlonus illustrated n the accompanyingdrawings, wherelnz Figured is a vertical sectionaijvi w through an elevator was my safetydevice applied thereto;

Fig. 2 is a fragmentary sectional view jon ,theline2 2ofFig.1; H "Fig; 3 isja fragmentary sectional view on the same lines as F s- 2,10% With/J1me endless: carrier, its supporting wheels, etc.,

removed so'as to show thetrap board;

Fig. 4 is atop plan view cram hopper 31 showing a over; and

Fig. 5 is a fragmentary vertical sectional view on the line of Fi'g, 1, looking in In these figures I have shown an ordinary there is jdisposed anuear ieabtor 13 and also a :band wheel 14, whichis operatively connected to the electriciinotorandffdrived thereby; This electric motor is controlled (usualconstruction and this in turn is connecteate thesource of electricity through the'knife blade switch'lGywhich is else-of any suitable construction; '1

"wheel or wheels 17 and" disposed in the upper end of the house 10 is a sprocket wheel or wheels 18, which arelocate'dimmediately above the sprocket wheels17l gThe sprocket chains forming an endless carrier 19, which be of "any suitableconstruction; pass "around-thesprocket wheel or wheels 17 and extend'vertically upward over the" sprocket fwheels 18" and then horizontally {over sprocket vwheels 20 and then downward and toward the first described 0 flight of the sprocket chains andoversprocket wheels 21, and then verticallywlownward to the chains or endless carrier19 carry a plurality of buckets 22 which maybe ofany suitable upward and over apulley 2 1, the shaftof which carries a gear wheel 25. This gear wheel 25 meshes witha relatively largegear trap 'board extending therev whee126 whichinturn mesheswith a pinion 27 mounted upon- ';the 'sliaftiof-the sprocket flbl-ade z slit 16. Now when any coal is diswli'ee'ls'18; "Thus power is tran'smittedto'the l sprocket wheels 18 and thus the endless carrier with its buckets isi-driven- 1 Inclosing the upper portion of the vertical flight of the endless carrieris a-housing 28,

which extends upwardand then laterally i :1 for a distance toward the sprocket wheels 20, as at 29. This horizontal portion 29 of o the housing discharges into a ichute 3O,

- MWhiChchu-te, xte d downwa d: andsin turn discharges intoafhopper 31L This llQPPer in turn discharges into {a chute. 32, extending,

to the exterior ofithe building and discharging into .a.,pivoted troughor chute 33, nor-c ,'rnally,iheld in a raised pos tion means 0f "the" counterweight 34, but which" chute" i eays ei lawer so as; t discharge into a 0 rier dips, into the hop'per, 35, which i-n-turn 7 receives; its, coal porl-other material; from a 36,. extending: upward f to the ground 7 and @a Q'OVe 'i this [chute e36 are disposed the r railway ltrafcks "87 whereby cars laden with -,c' a o' othe m te i m y sc r then productsinto' thechute and thus into the hene a f j,ln 'elevators;offithisgeharacter an operator usually lstandsgbeside a ,SCale. 3,8. and weighs U go' the c oaldischargedfromftheichute 33'. In evators rofilthis character, there areno" is have. th

evator. are' open;or skeletonic h P612 21 bwmesifilled up with coal or ibtli si ie d a dkth i h fio e wfi le iai wthen; t e Qa eon am Q;.; great percentage of damage to machinery l Q-k ll ,2, d -P3 l the h l n and from breaking buckets, These buckets ortion offthe housing 28 cannot be .dis-

t hfi l vb l fi i filled ,up and under normal circumstances it 105 v g y CkQ ndc arg at 3 requires one man to watchlthe chute 30 to 5 polnti-whel'e the; rotate; around the heels' gQ, the coal falling downhegoperator whostands by the 1, 7n 1% its upper open end disposed o a 501 611 .J AI,

44, 5 EQXJQG termed, V Which-is hingedly -.-s ;e e np e ibeamapo ny other it b e as ttac o t b am 3 mmsrar 9 th tructur V j Atacama!) thisboard 40 is a wire color" cable: 5 which e tends upw o r a pul ey am then-ex nds d w w r and,

conn ed; t an ug i a y ent lever 46, Pla -allyanountedg n ny:.-. 1. -itab m nner haain aitsre at aelv; short eaafM-dis- 5 posed behind the handle 4L8 of. the knife -ward onthewire cable and upon the long removed so asto dislodge the coal and re lieve thevcloggedfchute, then the lever 46 may bedrawndownward. which will draw t lthe trap board upintoitsnormal position wagon or other receptacle. The endless carswitch istripped the endless element 19 will ute 30 becomes 1 clogged or if become clogged. My safety mechanism does 7 ous conditions without de artinmfrom the fillhisschute ;39,,d1scharges;up on-a trapboard' p c1ar'gedfrom one of the buckets into the force of the spring, and this will draw uparm of the lever 46, causing the short arm of this lever to force the knife bladeswitch outward, thus breaking the circuit to the motor. This will almost immediately stop the motor and stop. the move1ncn t of the endless carrier. fWhen the coal within the chopper 131 has been discharged or the coal within the chute 30 has been discharged or operated. by even two pounds of coal fall- ,ing upon it; and will trip the switch. -In

actual practice I have found that j when i the run about the distance: between adjacent buckets beforethe endless element stops. It will be seen that if the chute 30 were. full and there was no provision made for stop- 5 ping-the motoril3, then the coal or other material wouldlodgein ,the' portion29 of theihousing 2 8,and clog this portion of the ,housing, l-thusbreaking the buckets. and injuringthemachinery. Ihave found that; this automatic tripping vdevice saves. a very break when chute 30becomes cloggedor is see that it is not oversflooding or doesnot away with the necessity of this watchman.

While I have illustrated a certain embodia ment of this invention which is entirely ejfiectiveunder. the circumstances illustrated, yet it will be obvious that the mechanism may be modified inimanyways to suit varispirit of the nventlon. I .,;Hav1ng .describedmy invention, what I v e jclaim is upport,,and-which isnormally held- 5. ;l horizqntalslipesitio by me n o v t a ti fs kpr fea t pp r, io j which '1 .;I-In a mechanism of the character described, angendless elevator having a vertical; 20

flight and a horizontal flight, a chute disand upon which material will be-disohanged from said chute, sa1d trap board rotating 13 operating the endless elevator, a device for cutting ofi" power to the motor, a vertically disposed chute mounted just beyond the first named chute and into which said buckets will discharge when the first named chute is filled or clogged, a vertically depressible trap member mounted beneath the second named chuteand yieldingly held in a horizontal position, and operative connections from said trap member to said means for cutting off the power of the motor.

3. In an elevator structure, an elevator house, an endless elevator having buckets and having a vertical flight and a horizontal flight disposed at the upper end of the Gopilee of this patent may be obtained for five cents each, by addressing the Commissioner of Batente,

house, a housing inclosing a portion of the vertical flight and a portion of the honzontal flight of the elevator, thehorlzontal portion of the elevator terminating in a discharge chute, an auxiliary chute disposed just beyond the discharge chute and into which said buckets discharge when the discharge chute is filled or clogged, a trap board yieldingly supported below said second named chute and yieldingly held in a horizontal position, an electric motor for driving the endless elevator, a switch controlling the passage of current to the motor, a lever operatively engaging the switch and when shifted in one direction opening the switch, and operative connections between the trap board and said lever whereby to actuate the lever upon the descent of the trap board.

In testimony whereof I hereunto aitix my signature in the presence of two; witnesses.

. ANDREW SORLIEN,

Witnesses:

JOHN L. AHERN, J. M. Pnrnv.

Washington, D. 0.. a 

